(19)
(11) EP 1 124 998 A1

(12)

(43) Date of publication:
22.08.2001 Bulletin 2001/34

(21) Application number: 99945789.8

(22) Date of filing: 22.09.1999
(51) International Patent Classification (IPC)7: C22B 26/22, C22B 3/20, C01F 5/30, C25C 3/04
(86) International application number:
PCT/CA9900/851
(87) International publication number:
WO 0017/408 (30.03.2000 Gazette 2000/13)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 23.09.1998 US 158607

(71) Applicant: NORANDA INC.
TorontoOntario, M5J 2T3 (CA)

(72) Inventors:
  • WHITE, Carl
    C.P. 704,Danville, Québec J0A 1A0 (CA)
  • BERUBE, Michel
    St-Lambert, Québec J4P 2W7 (CA)

(74) Representative: Prins, Adrianus Willem et al
Vereenigde,Nieuwe Parklaan 97
2587 BN Den Haag
2587 BN Den Haag (NL)

   


(54) METHOD FOR THE PRODUCTION OF A HIGH-PURITY CONCENTRATED MAGNESIUM CHLORIDE SOLUTION BY ACID LEACHING AND NEUTRALIZATION